California Native Plant Society
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Allium yosemitense
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Yosemite Onion
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Allium yosemitense

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About Yosemite Onion (Allium yosemitense) Allium yosemitense is a species of wild onion known by the common name Yosemite onion. It is endemic to the central Sierra Nevada of California, where it is known from only a few areas in the vicinity of Yosemite. This onion grows from a bulb two to three centimeters long, producing a stem up to about 23 centimeters in maximum height and two long, flat leaves which are usually a bit longer. The flower cluster bears up to 50 white or pink flowers, each on a pedicel which may be over 3 centimeters long.
Plant Description
Plant Type
Perennial herb

Max. Height
9 in (22.9 cm)

Flower Color
White, Pink

Native Status
Natural Setting
Site Type
Open, rocky slopes


Elevation ?
2049' - 6760'

Annual Precip. ?
34.4" - 51.7"

Summer Precip. ?
0.58" - 1.16"

Coldest Month ?
40.1° F - 46.3° F

Hottest Month ?
59.8° F - 71.7° F

Humidity ?
2.76 vpd - 22.67 vpd

Landscaping Information
Common uses
Bee Gardens

Nursery Availability
Never or Almost Never Available

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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